Create Get EventHandler

[huzzi]

We're trying to use an injected class to modify a property on the entity. We tried create a custom repository using DefaultUIOMaticRepository and make use of the GetById method but it seem like dependency injection is supported for custom repository.

Is it possible for a new event to be added to the UIOMaticObjectService ?

public static event EventHandler<ObjectEventArgs> GetObject;

This way we'll be able to modify the entity easily as dependency injection works for the event handler.

[TimGeyssens]

Happy to accept a pull request